Home / 687,186.86-948,285.73-381,259.98

Finding the Fourth Proportional to 687,186.86, 948,285.73 and 381,259.98

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Solution

The fourth proportional to 687,186.86, 948,285.73 and 381,259.98 is: 526,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,186.86 : 948,285.73 = 381,259.98 : x
  2. Step 2: Convert to fraction form
    687,186.86/948,285.73 = 381,259.98/x
  3. Step 3: Cross multiply
    687,186.86x = 948,285.73 × 381,259.98
  4. Step 4: Simplify right side
    687,186.86x = 361,543,398,930.66
  5. Step 5: Solve for x
    x = 361,543,398,930.66/687,186.86
  6. Step 6: Final answer
    x = 526,120.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.